
 import javax.media.*;
 public class StateHelper implements javax.media.ControllerListener {
 Player player = null;
 boolean configured = false;
boolean realized = false;
boolean prefetched = false;
boolean eom = false;
boolean failed = false;
boolean closed = false;
public StateHelper(Player p) {
player = p;
p.addControllerListener(this);
}
	public boolean configure(int timeOutMillis) {	
		long startTime = System.currentTimeMillis();
		synchronized (this) {
			if (player instanceof Processor)
				((Processor)player).configure();
			else
				return false;

while (!configured && !failed) {
try {
wait(timeOutMillis);
} catch (InterruptedException ie) {
}
if (System.currentTimeMillis() - startTime > timeOutMillis)
break;
}
}
return configured;
}
public boolean realize(int timeOutMillis) {
long startTime = System.currentTimeMillis();
synchronized (this) {
player.realize();
while (!realized && !failed) {
try {
wait(timeOutMillis);
} catch (InterruptedException ie) {
}
if (System.currentTimeMillis() - startTime > timeOutMillis)
break;
}
}
return realized;
}
public boolean prefetch(int timeOutMillis) {
long startTime = System.currentTimeMillis();
synchronized (this) {
player.prefetch();
while (!prefetched && !failed) {
try {
wait(timeOutMillis);
} catch (InterruptedException ie) {
}
if (System.currentTimeMillis() - startTime > timeOutMillis)
break;
}
}
return prefetched && !failed;
}
public boolean playToEndOfMedia(int timeOutMillis) {
long startTime = System.currentTimeMillis();
eom = false;
synchronized (this) {
player.start();


while (!eom && !failed) {
try {
wait(timeOutMillis);
} catch (InterruptedException ie) {
}
if (System.currentTimeMillis() - startTime > timeOutMillis)
break;
}
}
return eom && !failed;
}
public void close() {
synchronized (this) {
player.close();
while (!closed) {
try {
wait(100);
} catch (InterruptedException ie) {
}
}
}
player.removeControllerListener(this);
}
public synchronized void controllerUpdate(ControllerEvent ce) {
if (ce instanceof RealizeCompleteEvent) {
realized = true;
} else if (ce instanceof ConfigureCompleteEvent) {
configured = true;
} else if (ce instanceof PrefetchCompleteEvent) {
prefetched = true;
} else if (ce instanceof EndOfMediaEvent) {
eom = true;
} else if (ce instanceof ControllerErrorEvent) {
failed = true;
} else if (ce instanceof ControllerClosedEvent) {
closed = true;
} else {
return;
}
notifyAll();
}
}





